150 BOTANY. Aster adscendens, Lindl.—Twin Lakes, Colorado, at 10,000 feet (522); also from Utah. Var. ciliatifolius, T. & G., stems with many hnear leaves (1-3' long and 1-3" wide), somewhat cihate; scales ofthe involucre cUiate, acutish; upper part of the stems rather hispidly pubescent.—Cotton¬ wood Creek, Colorado (524). The leaves are in the main narrower and the scales of the involucre less acute than in 252 of Hall and Harbour's collection, with which my 509 more nearly compares. Number 492 of our Colorado collection is a slender, almost leafless state, with smaller rays and more acute tips to the involucre than the typical var. ciliatifolius. 523 a^g- T^Yoaohe^ A.falcatus, Lindl. Number 525, marked by Dr. Gray as a curious form, is, except for its smooth involucral scales, very much like A. integri- folius, Nutt (No. 6166 of Bolander's California collection), and so like the description of A. adscendens, var. Parryi, Eaton, that I am constrained to leave it there, and hence will probably be A. adscendens, Lindl. (?) (as con¬ sidered by Dr. Gnij in Fl. Cal. 1, 324) ; from Colorado. A specimen of adscendens, however, collected by me at the Soda Spring, on Kern River, in California, is like 525 in the involucral scales, but with much narrower leaves. Except this one from California and the one from Utah, all my material is from Colorado, at or above 10,000 feet altitude. Astee Nuctallii, T. & G. Fl. 2, p. 126; var. Fendleei, Torr. (A. Fendleri, Gray, Pl. Fendl. p. 66).—In the absence of the plant, I subjoin the following original description of Dr. Gray, entire, from Pl. Fendl: " Span high, with many ascending, rigid, somewhat hispid* stems from a subhgneous root; branches, monocephalous, corymbose-paniculate; leaves small, rigid, entire, hnear, coriaceous, sessile, mucronulate, smooth and single-nerved, with the margins hispidly cihate; the lowest subspathulate, and the upper very short; involucre campanulate, scales in 3 series, linear- oblong, glandulose-scabrellate, mucronulate, the exterior herbaceous ones obtuse and lax, the interior a httle longer, acute; achenia pubescent" (510.) Astee falcatup, Lindl—Valley of the Upper Arkansas, Colorado, and San Francisco Mountains, Arizona (488, 501). Astee simplex, WUld.—Nevada. Astee multifloeus, L., var. y. commutatus, T. & G.—Stem slender, unbranched, neariy sessUe, 3-4" in diameter; scales of the involucre